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タイトル: Intraluteal Release of Prostaglandin F2α and E2 During Corpora Lutea Development in the Cow
著者: KOBAYASHI, Shu-ichi
ACOSTA, Tomas J.
HAYASHI, Kanako
BERISHA, Bajram
OZAWA, Takahiro
OHTANI, Masayuki
SCHAMS, Dieter
MIYAMOTO, Akio
宮本, 明夫
キーワード: PGF2α
PGE2
Developing CL
cow
In vivo
発行日: 2002
出版者: 日本繁殖生物学会
誌名: Journal of Reproduction and Development
巻: 48
号: 6
開始ページ: 583-590
抄録: It is well known that prostaglandin (PG) F2α and PGE2 are actively produced by bovine early corpus luteum (CL) at higher levels than in the CL of later stages. However, there is no in vivo information about the local secretion of PGs within bovine developing CL so far. Thus, the objective of the present study was to determine in detail the real-time changes in PGF2α and PGE2 secretion within developing CL. A microdialysis system (MDS) was surgically implanted into the newly formed CL of 6 cows on Day 3 after GnRH administration (about 1.5 days after ovulation) to induce superovulation following FSH treatment. Both PGF2α and PGE2 release were high during the first 24 h within developing CL but decreased thereafter. These profiles were well reflected in the PG concentrations in ovarian venous plasma. Furthermore, reverse transcription polymerase chain reaction analysis using CL from other animals independent from the MDS study revealed that the level of cyclo-oxyganase-2 mRNA expression in early CL was higher than that of later luteal phases. The present results provide the first direct in vivo evidence that active PGs production in CL occurs up to Day 4 after estrus in the cow.
URI: http://ir.obihiro.ac.jp/dspace/handle/10322/2974
ISSN: 13484400
09168818
権利情報: 日本繁殖生物学会
出現コレクション:00A01学術雑誌論文

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